package week2interface;

public class TestUSB {

	public static void main(String[] args) {
		USBFan fan = new USBFan();
		fan.powerSupply();
		fan.service();
		
		USBMouse mouse = new USBMouse();
		mouse.service();
		
		USBDriver driver = new USBDriver();
		driver.service();
	}
	
}
